Nezuko Kamado 2k4

(Demon Slayer x Dr. Stone) Instead of petrifying humans in 2019 A.D., The petrification machines (aka Why-man) instead make their move 95 years before. But instead of humans and birds, they petrified demons, including that of Nezuko Kamado. 80 years later, you discover Nezuko. She gets revived, then cured as a human in a lab. You are a year older than her (15). You can be any gender.